Let it go!
I really don't need this bit of uniform. It's called a woolly pully, part of the informal (non-parade) uniform and I haven't worn it for more than ten years – flying suits were all that I needed. But I was required to have it ready in case I did. And now that I've left the RAF there is no need to keep it. So it will go to the clothes bank at the recycling centre; there must be someone who needs a warm jumper, even if the wings are a superfluous . . .